Question: Who was the head coach of Arsenal F.C. as of May 22, 2018?
Paraphrase: On May 22, 2018, who served as the Arsenal F.C. head coach?
SPARQL (Wikidata): SELECT ?obj WHERE { wd:Q9617 p:P286 ?s . ?s ps:P286 ?obj . ?s pq:P580 ?x filter(contains(YEAR(?x),'2018')) }